The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 21, 2021
Filed:
Jun. 25, 2019
Amazon Technologies, Inc., Seattle, WA (US);
Benny Ng, San Leandro, CA (US);
Siddharth Gupta, Redwood City, CA (US);
Bruce Robert Woodley, Palo Alto, CA (US);
AMAZON TECHNOLOGIES, INC., Seattle, WA (US);
Abstract
An autonomous mobile device (AMD) includes an active braking circuit able to quickly stop the movement of the AMD. For example, the device may stop to avoid an obstacle, upon determining a failure of an internal component, upon receipt of a command, and so forth. Responsive to a signal to stop, an active braking circuit uses sensor data from a driving motor moving with a first rotation to actively commutate that motor to an opposite rotation, bringing the AMD quickly to a stop. In some implementations, the active braking circuit may include an independent power source and motor drivers and operate as a backup to a primary braking system.